Updated October 2026
Best Time to Visit Iowa State Parks & National Parks
Iowa has 2 National Park Service units that report visitation. Below, each is ranked by annual visits, with the month our data recommends for the best balance of light crowds, comfortable weather and daylight. Crowds peak in summer almost everywhere — the recommended months show where the quieter shoulder seasons fall.
The 56 Iowa state parks are listed in their own section below the national park table. Crowd levels are shown for national park units only; for state parks the best month reflects weather and daylight.
Iowa parks on the map
Click a marker for the park page, or use Where to stay in the table.
Ways to pick a Iowa park
Quietest months
- Effigy Mounds — December
- Herbert Hoover — February
Most-visited
- Herbert Hoover — 106,672 visits
- Effigy Mounds — 56,912 visits
| Park | Annual visits | Best time | Busiest | Quietest | Stays |
|---|---|---|---|---|---|
| Herbert HooverNational Historic Site | 106,672 | October | Aug | Feb | Where to stay → |
| Effigy MoundsNational Monument | 56,912 | May | Jul | Dec | Where to stay → |
Iowa State Parks
56 state parks, with the month that usually brings the most comfortable weather and the longest days, where a nearby weather record exists.
- Ambrose A. Call State ParkUsually best in June · about 130 acresOfficial park page
- Backbone State ParkUsually best in June · about 1,800 acresOfficial park page
- Banner Lakes at Summerset State ParkUsually best in June · about 220 acresOfficial park page
- Beeds Lake State ParkUsually best in June · about 290 acresOfficial park page
- Bellevue State ParkUsually best in JuneOfficial park page
- Big Creek State ParkUsually best in JuneOfficial park page
- Black Hawk State ParkUsually best in June · about 77 acresOfficial park page
- Cedar Rock State ParkUsually best in JuneOfficial park page
- Clear Lake State ParkUsually best in June · about 55 acresOfficial park page
- Dolliver Memorial State ParkUsually best in June · about 610 acresOfficial park page
- Elinor Bedell State ParkUsually best in June · about 91 acresOfficial park page
- Elk Rock State ParkUsually best in June · about 1,000 acresOfficial park page
- Emerson Bay State Recreation AreaUsually best in JuneOfficial park page
- Fort Defiance State ParkUsually best in June · about 240 acresOfficial park page
- Geode State ParkUsually best in September · about 1,700 acresOfficial park page
- George Wyth State ParkUsually best in JuneOfficial park page
- Green Valley State ParkUsually best in June · about 1,100 acresOfficial park page
- Gull Point State ParkUsually best in JuneOfficial park page
- Honey Creek State ParkUsually best in JuneOfficial park page
- Lacey-Keosauqua State ParkUsually best in June · about 1,500 acresOfficial park page
- Lake Ahquabi State ParkUsually best in June · about 790 acresOfficial park page
- Lake Anita State ParkUsually best in June · about 930 acresOfficial park page
- Lake Darling State ParkUsually best in June · about 1,400 acresOfficial park page
- Lake Keomah State ParkUsually best in June · about 380 acresOfficial park page
- Lake Macbride State ParkUsually best in JuneOfficial park page
- Lake Manawa State ParkUsually best in September · about 1,600 acresOfficial park page
- Lake of Three Fires State ParkUsually best in June · about 1,100 acresOfficial park page
- Lake Wapello State ParkUsually best in September · about 1,200 acresOfficial park page
- Ledges State ParkUsually best in June · about 1,200 acresOfficial park page
- Lewis and Clark State ParkUsually best in June · about 250 acresOfficial park page
- Maquoketa Caves State ParkUsually best in June · about 320 acresOfficial park page
- McIntosh Woods State ParkUsually best in June · about 65 acresOfficial park page
- Mini-Wakan State ParkUsually best in JuneOfficial park page
- Nine Eagles State ParkUsually best in September · about 1,200 acresOfficial park page
- Okamanpedan State ParkUsually best in June · about 27 acresOfficial park page
- Palisades-Kepler State ParkUsually best in June · about 450 acresOfficial park page
- Pikes Peak State ParkUsually best in JuneOfficial park page
- Pikes Point State ParkUsually best in JuneOfficial park page
- Pilot Knob State ParkUsually best in June · about 140 acresOfficial park page
- Pine Lake State ParkUsually best in June · about 690 acresOfficial park page
- Prairie Rose State ParkUsually best in June · about 730 acresOfficial park page
- Preparation Canyon State ParkUsually best in June · about 350 acresOfficial park page
- Red Haw State ParkUsually best in June · about 420 acresOfficial park page
- Rice Lake State ParkUsually best in June · about 29 acresOfficial park page
- Rock Creek State ParkUsually best in JuneOfficial park page
- Springbrook State ParkUsually best in June · about 780 acresOfficial park page
- Stone State ParkUsually best in June · about 1,400 acresOfficial park page
- Templar State Recreation AreaUsually best in June · about 61 acresOfficial park page
- Trappers Bay State ParkUsually best in June · about 48 acresOfficial park page
- Twin Lakes State ParkUsually best in JuneOfficial park page
- Union Grove State ParkUsually best in June · about 310 acresOfficial park page
- Viking Lake State ParkUsually best in September · about 1,100 acresOfficial park page
- Walnut Woods State ParkUsually best in September · about 230 acresOfficial park page
- Wapsipinicon State ParkUsually best in June · about 400 acresOfficial park page
- Waubonsie State ParkUsually best in June · about 1,900 acresOfficial park page
- Wildcat Den State ParkUsually best in June · about 430 acresOfficial park page
State park listings come from the Iowa state park agency. Boundaries and acreage come from the USGS Protected Areas Database. Best-month estimates use NOAA 1991-2020 climate normals and computed daylight.
Iowa park crowd calendar (2 parks, all 12 months)
Download the full best-months table for all 2 of Iowa's national parks — each park's month-by-month crowd index (1.0 = its average month), busiest and quietest months, and Best-Time-to-Visit score. Built from NPS visitation data. Enter your email to download. No spam, unsubscribe anytime.
Where to stay near Iowa's national parks
Find hotels, cabins and vacation rentals across Iowa to base your national-park trip — live availability and prices.
Top-rated places to stay near Iowa national parks
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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